let fs = require('fs-extra'); let source = './build/phaser-facebook-instant-games.js'; let sourceMap = './build/phaser-facebook-instant-games.js.map'; let destFolder = '../fbtest1/lib/'; let dest = '../fbtest1/lib/phaser-facebook-instant-games.js'; let destMap = '../fbtest1/lib/phaser-facebook-instant-games.js.map'; if (fs.existsSync(destFolder)) { fs.copy(sourceMap, destMap, function (err) { if (err) { return console.error(err); } }); fs.copy(source, dest, function (err) { if (err) { return console.error(err); } console.log('Build copied to ' + dest); }); }